Re: [PATCH] mtd: Expand the ecc placement locations to 1260

2015-04-08 Thread punnaiah choudary kalluri
Ping On Tue, Mar 24, 2015 at 8:04 AM, punnaiah choudary kalluri wrote: > On Fri, Mar 20, 2015 at 4:51 AM, Jeff Lauruhn (jlauruhn) > wrote: >> This device has a Page size x8: 17,600 bytes (16,384 + 1216 bytes) and >> minimum required ECC 24-bit ECC per 1100 bytes of data. Spare area needed >>

Re: [PATCH] mtd: Expand the ecc placement locations to 1260

2015-03-23 Thread punnaiah choudary kalluri
On Fri, Mar 20, 2015 at 4:51 AM, Jeff Lauruhn (jlauruhn) wrote: > This device has a Page size x8: 17,600 bytes (16,384 + 1216 bytes) and > minimum required ECC 24-bit ECC per 1100 bytes of data. Spare area needed > for ECC would be ECC * M, where M is (codeword <= 2^m-1). In this case M=14, >

RE: [PATCH] mtd: Expand the ecc placement locations to 1260

2015-03-19 Thread Jeff Lauruhn (jlauruhn)
This device has a Page size x8: 17,600 bytes (16,384 + 1216 bytes) and minimum required ECC 24-bit ECC per 1100 bytes of data. Spare area needed for ECC would be ECC * M, where M is (codeword <= 2^m-1). In this case M=14, because (1100*8)<=2^14-1, therefore minimum spare area needed is 14*24 =